Chimney scaffold



Patented May 25, 1926.

UNITED STATES ANSON J. HALL, OF DES MOINES, IOWA.

CHIMNEY SCAFFOLD.

Application filed December 10, 1923.

My invention has to do with a chimney scaffold adapted to hold bricks,mortar, tools or the like for a workman building or rejiiairing achimney or performingother labor on a roof.

The object of my invention is to provide such a scaffold of simple,durable and comparatively inexpensive construction, built as a unitwit-h its parts connected together so that the scaffold can be easilymoved as a unit from place to place and particularly on a roof where thehandling of scaffolding material is difficult.

A further object is to provide such a scaffold having a supportingmember and an element or elements hinged thereto, to stand at differentangles with relation to the sup-- porting member, and to provide foreach of said elements a brace hinged to the support-- ing member andadapted to coact with a corresponding element of the kind mentioned forholding the supporting member in rigid position, when said elementsstand at different angles with relation to the sup: porting member.

IVith these and other objects in view, my invention consists in theconstruction, arrangement and combination of the various parts of mydevice, whereby the objects contemplated are attained, as hereinaftermore fully set forth, pointed out in my claim, and illustrated in theaccompanying drawings, in which:

Figure 1 shows a perspective view of a portion of a roof having thereona scaffold embodying my invention.

Figure 2 is a longitudinal sectional View of my improved scaffoldinstalled on a roof.

Figure 3 shows a perspective view of a slightly modified form of myinvention, resting in position upon a roof ad acent to a chimney.

In the accompanying drawings, I have used the reference numeral 10 toindicate generally a roof pitching in both directions from a comb havingextending upwardly from the central portion thereof: a chimney 11.

It is well known that it is difficult to get a scaffolding into placefor the purpose of repairing such a chimney and especially whererepairing shingles other than wood, and indeed, even where woodenshingles are used.

It is undesirable to nail into the shingles Serial No. 679,839.

in setting up a scaffold on account of the likelihood of causing leaks.My scaffold which can be used without nailing any parts to a roof isshown in one form in Figures 1 and 2 and has a supporting member 12.

In Figure 1. I have shown the scaffold on one side'of the chimney and inthis con ncction, it may be mentioned that a similar scaffold may beplaced on the opposite side and then a cross board placed at rightangles to the scaffold for connecting the opposite scaffold memberstogether similar to that shown in Figure 3.

Hinged to the underside of the supporting member 12 near themiddle'thereof from end to end and spaced apart from each other areelements 13 designed to rest on a roof on opposite sides of the comb.The elements 13 may be hinged to the member 12 far enough apart'to letthe member 12 rest upon the comb of the roof if desired.

Pivotedi to the underside of the member 12. spaced from the hinges 1a ofthe elements 13 at substantial distance on opposite sides thereof byhinges 15 are braces 16.

Each element 13 is provided with a series of notches or other stopelements 17 to hold the lower ends of the braces 16 for thus supportingthe member 12 as shown in Fig ures 1 and 2.

By supporting the braces 16 in different notches 17 the. device can beadjusted for roofs of different pitch.

It will be seen that a scaffold of this kind can be handled as a unit,that it is con'iparatively light of weight and simple of constructionand can be adjusted in places adjacent to the chimney 11 for the purposeof supporting bricks, motor, tools, etc. on the member 12 quickly andeasily and without driving nails into the shingles or other roofcovering material.

Where the chimney is located on the slanting roof instead of a comb, Iuse a modified form of invention illustrated in Figure 3. n that figureI have used the reference numeral 18 to indicate the chimney on the roof19.

The scaffold of the kind shown in Figure 3 comprises a supporting member20, an element 21 hinged to the underside thereof and a brace 22 hingedat 22'' to the member 20 and adapted to coact with the element 21 in thesame way that the brace 16 coacts with the element 13.

I provide two duplicate members 20, 21 and 22 arranged one on each sideof the chimney as shown in Figure 3, and connect the upper ends abovethe chimney by a cross member or the like 23 of any desired form.

It will be seen that when the braces 22 are placed in position forsupporting the members 20, there are two tables one on each side of thechimney for holding mortar, bricks or the like.

A cross board 24 may be placed on the members 20 beside the chimney ifdesired for holding additional material or other tools.

The advantage of scaffolds of the kind herein described is obvious fromthe foregoing explanation. They are more easily handled than ordinaryscaffolds and there are no parts to be lost, they are more quickly andeasily set up and, therefore, less expensive than ordinary scaffoldingand they eliminate the necessity for driving nails into the roofcovering.

It usually takes from one to three hours to build a scaffold on a roofpreparatory to repairing a chimney. That time is almost entirely savedwhere my scaffold is used. Minor repairs can be made, with the use of myscaffold, in the time it would take to put up the usual built-upscaffold. This saving of time and consequent saving of expense isespecially important on repair jobs.

Some changes may be made in the construction and arrangement of thevarious parts of my improved scaffold without departing from the realspirit and purpose of my invention, and it is my intention to cover bymy claim, any modified forms of structure or use of mechanicalequivalents, which may be reasonably included within their scope.

I claim as my invention:

In a chimney scaffold of the class described, a pair of laterally spacedsupporting platform members, a transverse con necting member secured tothe top of, said supporting members at one end thereof for restingagainst a chimney on an inclined roof, a pair oi supporting elementshinged to the undersides of said supporting members at the same endsthereof which are connected by the transverse member to underlie thesupporting platform members in inclined position on a roof, legs hingedto the undersides of said platform members at points substantiallyspaced from said trans-- verse member, said legs and said inclinedsupporting members having coacting parts, whereby the legs are heldagainst slipping when in upright installed position.

ANSON J. HALL.

